水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2013年
3期
45-48
,共4页
基坑开挖%有限元分析%盾构隧道%临近地铁隧道
基坑開挖%有限元分析%盾構隧道%臨近地鐵隧道
기갱개알%유한원분석%순구수도%림근지철수도
deep foundation pit excavation%finite element analysis%shield tunnel%adjacent-to-subway tunnel
结合上海宝庆路临近地铁7号线某深基坑工程的设计方案,利用数值模拟的方法动态预测深基坑开挖对临近既有地铁隧道的影响,并对地铁保护方案进行模拟对比分析;为防止地下连续墙开挖造成过大的位移,预先采用三轴水泥土搅拌桩进行槽壁加固,并对坑底加固强度进行对比分析,发现对基坑底部土体进行加固可有效抑制临近隧道的变形,但应注意选择最优化的加固强度.
結閤上海寶慶路臨近地鐵7號線某深基坑工程的設計方案,利用數值模擬的方法動態預測深基坑開挖對臨近既有地鐵隧道的影響,併對地鐵保護方案進行模擬對比分析;為防止地下連續牆開挖造成過大的位移,預先採用三軸水泥土攪拌樁進行槽壁加固,併對坑底加固彊度進行對比分析,髮現對基坑底部土體進行加固可有效抑製臨近隧道的變形,但應註意選擇最優化的加固彊度.
결합상해보경로림근지철7호선모심기갱공정적설계방안,이용수치모의적방법동태예측심기갱개알대림근기유지철수도적영향,병대지철보호방안진행모의대비분석;위방지지하련속장개알조성과대적위이,예선채용삼축수니토교반장진행조벽가고,병대갱저가고강도진행대비분석,발현대기갱저부토체진행가고가유효억제림근수도적변형,단응주의선택최우화적가고강도.
@@@@Based on the design proposal of one deep foundation pit excavation project near Shanghai Subway Line No .7 in Baoqing Road ,the dynamic effects of the deep excavation on the tunnel near existing underground railway are predicted by the numerical analysis with finite element software ABAQUS ,and the numerial comparison and analysis are carried out for the protecting schemes of the subway .In order to prevent the excessive displacement from continuous wall excavation , the triaxial concrete-mixing pile will be used to strengthen the trench wall and the bottom of the excavation .After compar-ison ,it is found that these strengthening measures can prevent the deformation of the adjacent-to-subway tunnel effective-ly ,but the special attention is required to the choosing for optimized reinforcing strength .
